A germfree mouse that is not born by cesarean section is not a suitable animal model for investigating the interaction between a host and one type of bacteria.
Answer the following statement true (T) or false (F)
True
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Genetic imprinting is caused by ____
a. insertion of a nucleotide into an exon b. deletion of an amino acid from the mRNA strand c. a frameshift mutation d. epigenetic changes to DNA e. a change in a termination codon
The major way that meiosis II differs from mitosis is that
A. in meiosis II, the homologous sister chromatids align at the metaphase plate as a tetrad. B. in meiosis II, a pair of sister chromatids move to the pole. C. in meiosis II, the daughter cells are haploid. D. in meiosis II, a synaptonemal complex is formed. E. in meiosis II, the homologues separate.
Competitive exclusion is the result of
a. mutualism. b. commensalism. c. competition. d. predation. e. parasitism.
Which of the following pathogens/diseases would be the easiest to eradicate?
A. A pathogen that mostly infects animals but also sometimes causes disease in humans. B. A pathogen that only infects humans and rarely causes signs and symptoms. C. A disease that is asymptomatic and is carried by a large number of people in a population. D. A pathogen that only infects humans and causes obvious signs and symptoms. E. A pathogen that causes disease in both animals and humans.